as for plug i always get bosch single platinum or E3, the iridium is way to expensive and the e3s last just as long. you can get them from advance with 20% off if you put p20 in the box at the end


did you clean the iac seat in the tb? make sure there is no vacuum leak in the iac?

Ok ill stop at the store and grab sum cleaner & plugs today.. And r E3 plugs good? Ive heard of them before..
And as far as cleaning the iac seat, i wiped it with a rag and a little brake clean to clean it up.. How would i go about checking for leaks?

Grab a can of carb cleaner and spray it around all mating surfaces while the engine is running.

I have not used the E3'* yet personally, but I have heard decent reviews about them, so far I have stuck with iridium because the AC Delco Iridium plugs are what came in my 96' PA when it was manufactured.

To check for leaks do as Mike suggested, While the motor is running spray around areas of all gaskets, like throttle body, and intake manifolds.
Also while you are at it inspect your soft rubber EVAP hoses, I am willing to bet they have started to dry-rot, I had to replace every soft EVAP hose on my car, even ones under the right rear of the car, the one that goes to the fuel tank had to be replaced, even the ones coming from my air leveling compressor, the lines that run to the air dryer were rotted..
Also check the soft EVAP connectors, like the ones at the throttle body that the soft EVAP hoses run to.

it doesnt matter what the car came with, thats just a thing the parts stores keep perpetuating to sell expensive plugs. the different type are all about how long they last basically. ive tried all the platinum ones and they last maybe 40-50k, the e3'* i have used should last twice that long

Ok wat am i suppose to look for when spraying the carb cleaner?
& i think im gonna go with the E3'*.. They seem to hav good recommendation behind em

Not looking for, but listening for the engine idle to change when your spraying all mating parts.

Ok gotcha..

So the parts stores perpetuated a myth to get GM to use the more expensive plugs?
I am not talking about using a part store recommended part, I understand them trying to get regular people to buy the most expensive plug, but like I said, I am only using what was in there from the factory, I got the car from an elderly family member when it had 27k on it, and I was the first to change the plugs, they were iridium, I know I can use a cheaper plug, but the car has always ran great with the Delco Iridium plugs, so I have stuck with them.
I will try the E3'* eventually, but it will be a while before I need to change plugs again, as they only have like 2,000 miles on them, I expect to get 60k or so easy, some say 60-80k, but 60k I'll most likely change them no matter how they look.

gm uses whatever they think will last 100k thats when the warranty runs out for most. the problem is though the ones i have gotten from the parts stores, even exact same as factory dont last more than 50-60k(aftermarket must be different somehow). and they are much more than e3 which would be fine if they lasted longer that the e3 but they dont. so bottom line is cost vs length of service, the e3'* last longer and are a dollar or two cheaper per plug to buy.